GHL Doser 2.1 SA Dosing System
GHL_DOSER_2_1
The GHL Doser 2.1 SA is a standalone four-pump precision dosing system driven by 24V stepper motors, suitable for multi-additive reef protocols such as Triton, Balling, KZ or Aquaforest. It...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
The GHL Doser 2.1 SA is a standalone four-pump precision dosing system driven by 24V stepper motors, suitable for multi-additive reef protocols such as Triton, Balling, KZ or Aquaforest. It offers adjustable flow of roughly 8 to 45 mL/min with dosing volume resolution down to 0.1 mL, built-in WiFi for control via the myGHL service, and expandability up to 16 pumps. The most popular configuration is the 4-pump master unit described here.
Build around the GHL Doser 2.1 SA Dosing System.
It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.
Pick the right one, not the biggest one
The honest line-up from dosing & testing. Most buyers reading this page should buy the middle column.
Neptune DOS Dosing Pump
GHL Doser 2.1 SA Dosing SystemAsked before checkout
The questions our support inbox actually gets.
Does it ship quickly?+
Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.
What if it's the wrong fit for my tank?+
Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.
Who handles the warranty?+
We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.
How does the bundle discount work?+
Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.